Passage
All things that the Father has are mine; on account of this I have said that he receives of mine and shall announce [it] to you.
John 16:15 (DBY)
Nearby Context
John 16:13 But when *he* is come, the Spirit of truth, he shall guide you into all the truth: for he shall not speak from himself; but whatsoever he shall hear he shall speak; and he will announce to you what is coming.
John 16:14 He shall glorify me, for he shall receive of mine and shall announce [it] to you.
John 16:15 All things that the Father has are mine; on account of this I have said that he receives of mine and shall announce [it] to you.
John 16:16 A little while and ye do not behold me; and again a little while and ye shall see me, [because I go away to the Father].
John 16:17 [Some] of his disciples therefore said to one another, What is this he says to us, A little while and ye do not behold me; and again a little while and ye shall see me, and, Because I go away to the Father?
Study Lenses
The verse centers on "all things", "father", "mine", "account", "said", "receives", and "shall". It is saying that the verse draws attention to "all things" and "father", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 14's "He shall glorify me for he shall..." into verse 16's "A little while and ye do not...", so "all things" and "father" belong inside that flow. In John context, the local focus is the identity of Jesus, new birth, eternal life, and belief and unbelief.
A plain takeaway is to answer the verse's own emphasis on "all things" and "father" with trust shaped by these words, not by a vague optimism outside the passage.